Compact S-Beam Load Cell | Tension & Compression | DBCR

At a Glance

Description

The DBCR compact S-beam load cell is suitable for use in both tension and compression and lends itself to a multitude of low-range monitoring, control, test and measurement applications including material testing machines and small suspended hoppers.

The DBCR is a compact version of the classic S-beam load cell design manufactured from aluminium and available with measuring capacities from 0-10N up to 0-500N. It offers a very high accuracy of better than 0.05% of rated capacity.

The DBCR compact S-beam load cell can be supplied calibrated with any of our range of strain gauge input instrumentation to provide a complete, ready to use measurement system.

For other sizes and capacities please view our full range of S-Beam load cells.

Technical Specifications

Rated Capacity (RC)	N	0-10, 0-20, 0-50, 0-100, 0-250, 0-500
Operating Modes	Tension/Compression / Tension & Compression
Sensitivity (RO)	mV/V	2.0 ±0.1%
Zero Balance/Offset	±%/Rated Output	<1.0
Output Symmetry (tension vs. compression)	±%/Rated Output	<0.20
Non-Linearity	±%/Rated Output (BFSL)	<0.05
Hysteresis	%/Rated Output	<0.03
Repeatability	±%/Rated Output	<0.03
Temperature Effect on Zero	±%/Rated Output/ ˚C	<0.005
Temperature Effect on Sensitivity	±%/Applied Load/ ˚C	<0.005
Input Resistance	Ohms	375 nominal
Output Resistance	Ohms	350 nominal
Insulation Resistance	Megohms	>5000 @ 50Vdc
Excitation Voltage	Volts AC or DC	10 recommended (2-15 acceptable)
Operating Temperature Range	˚C	-20 to +80
Compensated Temperature Range	˚C	0 to +70
Storage Temperature Range	˚C	-20 to +80
Safe Overload	% of Rated Capacity	150
Ultimate Overload	% of Rated Capacity	200
Fundamental Resonant Frequency*	Hz	5N=58, 10N=82; 20N=136; 50N=130; 100N=210; 250N=420; 500N=700
IP Rating (Environmental Protection)		IP50
Weight (excluding cable)	grams	85
Fatigue Life	Consult Sales
Cable Length (as standard)	2 Metres
Cable Type	4-core screened, PVC sheath, Ø3.5
Construction	Aluminium Alloy
Resolution:	1 part in 250,000 (with appropriate instrumentation)
*The resonant frequency is calculated with the body of the load cell attached to a large plate, ensuring that only the sensing element oscillates: This is vital to achieve the highest natural frequency and subsequent frequency response.

Product Dimensions

All dimensions are in mm.

Wiring Details

Wire	Designation
Red	+ve excitation
Blue	-ve excitation
Green	+ve signal (compression)
Yellow	-ve signal
Screen	To ground - not connected to load cell body

Ordering Codes & Options

Core Product	Capacity (inc Engineering Units)	Cable Length (m)	Specials Code	Example Result
DBCR	10N	002	000	DBCR-10N-002-000
DBCR	20N	002	000	DBCR-20N-002-000
DBCR	50N	002	000	DBCR-50N-002-000
DBCR	100N	002	000	DBCR-100N-002-000
DBCR	250N	002	000	DBCR-250N-002-000
DBCR	500N	002	000	DBCR-500N-002-000

How To Install An S-Beam Load Cell

Our Applied Measurements experts have put together a 5-step guide to demonstrate how to correctly install an S-beam load cell.

Step 1 – Keep the Forces Centrally Aligned

To reduce any off-axis loading, forces must be centrally aligned through the centre of the load cell.  We can supply optional load buttons and rod ends which work to reduce any side loading.

Step 2 – Do Not Overtighten the Rod Ends and Load Buttons

When using rod ends and load buttons be sure not to overtighten them when attaching them to the S-beam load cell.  As this can cause damage to the load cell.

Step 3 – Always Leave a Gap

Ensure that the rod ends and load buttons do not touch the central beam.  If a gap is not maintained, the central beam will not be able to move freely when tension or compressive force is applied.

Step 4 – Mount on a Flat Surface

Always secure the S-beam load cell to a clean, flat surface of better than 0.005mm surface flatness.

Step 5 – Contact with Active Area Only

When installing the S-beam load cell ensure the load is applied to the active end area only.

Mounting And Installation Accessories

Load Buttons and Rod End Bearings

Designed to align forces through the principal axis of the load cell thus reducing the effects of extraneous forces, hence offering improved performance from the cell.

Load buttons are used where compressive forces are applied.
Rod End Bearings are used where tensile forces are being applied.

Load Buttons for Compressive Use

THREAD T	M6 x 1
D	12.5
H	6
L	9
R	200

Rod End Bearings for Tension Use

Maintenance-free rod ends are a complete units made up of a housing with both an integral shank (with an internal or external thread) and a maintenance-free spherical plain bearing, located within the housing.

Key Features:

• Supports radial loads in a tensile or compressive direction.
• Suitable for unilateral loads – can support alternating loads and alternating loads in combination with bearing GE..UK-2RS, please consult sales.
• Zinc plated for corrosion resistance.
• Are maintenance-free.
• Fitted with radial spherical plain bearings GE..UK
• Hard chromium/PTFE composite sliding contact surfaces.
• Enables compact adjacent construction thanks to its thin walled design of the eye housing.

GAR..UK
(right hand thread)

• To ISO 12 240-4, dimension series E, type M
• Shank with external thread

Maintenance-free
ISO 12 240-4, dimension series E, type M
Sliding contact surface: hard chromium/PTFE

Series GAR..UK
Sliding material: PTFE composite

LOAD CELL	SHAFT DIAMETER	ORDERING CODE		MASS	DIMENSIONS
	d	WITHOUT SEALS	WITH SEALS	≈ kg	d	D	B	dK	d1	d2	d3
DBCR	6	GAR 6 UK	-	0.017	6-0.008	14	6-0.12	10	8	21	M6

LOAD CELL			Degrees				Chamfer Dimension	Basic Load Ratings		Radial Internal Clearance	Shaft Diameter
	h	C1	α	l1	l2	l7	r1s min.	dyn. Cr N	stat. C0r N		d
DBCR	36	4.4	13	18	46.5	12	0.3	3 600	6 920	0 - 0.032	6